Process for protecting a surface from non-desired contamination

Details Process for protecting a surface from non-desired contamination Process for protecting a surface from non-desired contamination

1998-04-14

1999-09-07

Bell, Janyce

Stock material or miscellaneous articles

Composite

Of natural gum, rosin, natural oil or lac

427154, 427156, 427384, 427271, 427287, 4273855, 4273881, 427336, B65B 3300, B05D 302, B32B 904

Patent

active

059485450

ABSTRACT:
A process for protecting a surface from non-desired contamination and for facilitating removal of said contamination from said surface, characterized by the steps: a) preparing a solution of polysaccharides containing at least two components, wherein one component is constituted by a first polysaccharide which, when precipitated from a solution by evaporation of the solvent thereof, directly forms a film and wherein the second component is constituted by a second polysaccharide which, when precipitated from a solution by evaporation of the solvent thereof, forms a film via at least partial gel formation, or by interaction with said first polysaccharide, said films being redissolvable or swellable: b) applying the solution from step a) onto said surface before subjected to contamination: c) allowing the applied solution to dry so as to form a solid film on said surface via at least partial gel formation: d) treating the film-coated surface with a liquid capable of redissolving film or provided swelling thereof: and e) removing the non-desired contamination by complete or partial removal of the film from the surface.

REFERENCES:
patent: 5017237 (1991-05-01), Svensson
patent: 5093485 (1992-03-01), Svensson
patent: 5308647 (1994-05-01), Lappi
patent: 5395646 (1995-03-01), Basseres et al.
patent: 5418006 (1995-05-01), Roth et al.
patent: 5750189 (1998-05-01), Svensson

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